Climbing Tips

So , i'm a bronze 1 player who got deranked from silver 5 , i main jungler and top laner , i really ran out of solutions on how to carry a game , searching Youtube , Facebook , Even Watching Twitch Pro Streams didn't help me , What Can i do as Amumu jungler when my zyra gets killed 3 times in a row by a Veigar before i hit level 6 , then she complains about how bad jungler i am , thats not the point cuz i muted her , but also my bot lane ended up giving double kill to the Lucian Twice !!! , so i waited to the 20-min mark to call for the surrender , what can i do to win a game Please someone tell me , who are the best top lane / jungle champs to carry a Whole team of feeders , and please don't tell me if you lost then you don't deserve to win , i was 4/0/1 and lost couldn't do much there but surviving. Regards , Thanks in advance.